Typewriter



A BLOCK.

TYPEWRITER.

APPLICATION FILED NOV- 5,1919- 1,389,237- Patented Aug. 30, 1921.

2 3| 1 4 SHEETS-SHEET Inventor EX. BLOCK A. BLOCK.

TYPEWRXTER.

APPLICATION FILED NOV- 5. ISIS. 1,389,237. Patented Aug. 30, 1921.

4 SHEETS-SHEET 2.

W 5 Inventor A. BLOCK.

TYPEWRHER.

APPLICATION nuzo NOV. 5. r919.

1,389,237, Patented Aug. 30, 1921.

4 SHEETSSHEET 3.

v v n Witnesses bmentor 7 ALEX- BLOCK /w -o%L babm A. BLOCK.

TYPEWRITER.

APPLICATION FILED NOV- 5.1919. 1,389,237, Patented Aug. 30, 1921. I

' 4 SHEE1S-SHEEI 4. V

2. I: 11 K V 5 1 3 fi fi 3 o I n a a; I 7 8 E e 7 Y6 7 7o 2: 1 1E b 74 7 DZ ALEXANDER BLOCK, OF NEW YORK, N. Y.

TYPEWRITEB.

Specification of Letters Patent.

Patented Aug. 30, 1921.

Application filed November 5, 1919. Serial No. 335,857.

To all whom it may concern:

Be it known that I, Annxnxnnn BLOCK, a citizen of the United States, and residing in the city of New York, borough of Manhattan, county and State of New York, have invented certain new and useful Improve ments in Typewriters, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is a typewriter belonging to that class of machines commonly known as visible machines. The object of this invention is, more lnirticularly, to improve the impression mechanism in that class of typewriters wherein types are successively delivered to a common priutinp position to cooperate with said impression mechanism for performing the printing operation.

Another object is to improve the arriage feed mechanism. and to provide a typewriting machine with a carriage. escapcmcnt device of simple construction that shall be adaptcd to cooperate with the impression mechanism for returning said mechanism to normal rest position subsequently to the printing operation.

In machines of this type, such as the llammi'md, a hammer cooperates with the types to perform the printiup operation. The, said hammer is adapted to he drivcn forward under the impulse of a sprinp and delivers a. jarring: noisy blow in performing the printingoperation. This is one objeclionnbic feature presented by said impressing device. A further objection is, that its constrln'tion prevents the insertion of the paper into the carriage from the rear of the machine. as is the case in typewriting machines of standard make in general use in business ofiiccs. An extra cylinder is rcllllll'i'd in the Hammond type of machine for storing the paper. This renders such machines undesirable for use in business otlices, for the reasons that. large sheets of paper or paper of extra thickness become folded or creased in said cylindrical receiver. It is therefore rather impracticable to write on such paper or to manifold a number of sheets at a time in the said Hammond type of machine.

Bjorkstcn of Petrograd had attempted to overcome this drawback by providing a specially constructed hammer arranged to permit of the insertion of the paper from the rear of the machine and thereby eliminating the cylindrical receiver. But his device is of such clumsy unwieldy construction as to render it more objectionable than the present means.

The ob'ects of my invention are to overcome these drawbacks by eliminating both the cylindrical receiver and the hammer; my invention consisting in providing a ma chine of that type with an impression bar of the construction illustrated in the appended drawings and fully described herein. The said impression bar obviates the necessity for an extra cylinder and permits of the lnscrtion of the paper in the usual manner employed by machines of standard make. In performing the printing operation, the impression bar exerts a dwelling pressure, and its operations are practically noiseless.

A further object of my invention is to provide changeable means controllable by an operator, adapted to limit the movement of the impression bar in performing the print in; operation; the variable position of said bar bcin arranged to regulate the operatiw force of the impression bar in performing the printing operation. This changeable device allows of the rc ulating of the impressing force of the impression bar. variable impressing force being required for varyin; thicknesses of paper or in manifoldin several sheets of paper at a, time. The said device is controlled by means preferably positioned at the front of the machine.

Another object of my invention is to save power by providing mechanically driven means controllable by an operator, for moving the impression bar to printing position, and further mechanical means independent of the operator for the returning of said impression bar to normal position subsequently to the printing operation.

Other features of the invention will be pointed out and still others will become apparent in the specification, wherein a detailed description is given of the invention taken in conjunction with the accompanying drawings.

l have illustrated different practical embodiments of my invention in the accompanying drawings. but the constructions therein shown are to be understood as illustrative and not as defining the limits of the invention. Furthermore, the invention consists in the various novel features of con in the accompanying drawings, 1111i no ticnlarly described in the claims at the Pit-It of the specification.

I will now proceed to describe my inven tion with reference to the accompany; drawings, wherein,

Figure 1 is a top plan view of the embodying my invention with ports oniittwi and parts broken away. Fig. 2 is it Vtitlt'iii longitudinal section of the nnn-hine shown in Fig. I, along a line B-Ji. Fig. 2A shows my invention :is applied to a machine girli- Vided with a type wheel marryingnlm'nhhi types. Fig. 3 is a. perspective view of the impression bar and its frame. Fig. is cross-section of snitl impression hair tlilti the. paper feed rolls. Fig. 5 is n perspective ile tail of the carriage feed mechanism and the impression her actnnting means, showing the operative connection between them. with some parts omitted and other parts hrohcn away. Fig. 5A shows the impression hnr actuating. means and its maintaining and releasing devices shown in operative connection with said actuating means. H is detail of the pivoted frame nieniiier of the escapement mechanism. Fig. 7 is a detail of the slidahle member of the escapcment llxil'i'h nnisni. Fig. 8 is a. detail tl ",ftljiitlii of part of the impression bar frame and the collar in which it is iulapteil to slide. Fi 9 is a detail View of the device for returning the impression bar to retracted rest position his".

subsequently to the printing opcrstion.

10 is e. Sitlfi view seen from show of the tern of bars. links and levers opcrahly meeting the impression hnr unit the carriage feed mechanism with a. keyboard. Fig. ii is a rear View of the nuichine with ports broken away and other parts on'iitteil. 12 is a front cie ation at the carriage of a modified type of machine embodying my in vention. Fig. 13 is :1 cross section thereof In the accompanying drawings, similar characters of reference designate siinihir parts throughout the several views.

One type of machine einhoihving my i vention and illustrated in thencconipnnyi rawings. shows the impression lmr list-u in conjunction with pivoted type hnrs. T e said type liars are arranged rinlislly ot' n segmental support, and are tullllltfitl to h; liver types successively to n common prinh ing position to cooperate with Stilt] ixnpr -ssion bar for performing the printing opera. tion. It shonhl he understood. however. that I do not wish to limit myself to that conihi nationwhich is to be regarded as illiiSUTt tire rather than defining the limits of the invention. In another type of machine illustrated in the drawings the impression her shown in conjunction with a type wheel carrying movable types. The said imprcse sion bar may be adapted for use with type nnichinc.

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i'lninicil high-co. Kilt type of t l i'i. 5i

wiEi the machine lilii ii The irsznw zlillfi lfitiiit nei' posts. it i. rhino n trait-Ii lens-hi renr ot the tzi iiaim nini summits to: unions nun-lint in marriag i fiiiif' mhoiiscil cell 3 and ion; th f l il whi lili her 4 with its i'rninc Ii :il nzown'iciit in: said curring. p i; is hine he a .ii' any snit- -i iii iii coriihe me. it tin;-

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'3 lifil' i. may differ it cona show I! in the drawings. and its h ut: r-wi- 'i' to feed roll nmy in i i tin has i shown :ii i horn} in Figs. 2A. tilt? with ut thingies nimtion showfun! the rcnr so pint-c .iiz giwi in'ulily mount- :nt't: f H Hti'iEiL" trans- "nn 1; l-Hiti ioiirlti'iils 2m? tlFtili it h in its hearings in iinisne .3. in her heiflg: e rrnngri i t temc iow mi' and ii any from the printing em; to exert an even, iil fitiii fi rtli ifiiliiSi Liltili i.

ii iiifflS-l'litti" I iring n mine 3:

strnction position at iiii'ec.

will.

s u per and proi hie} i i mlinr Iii-3 is in operative connection with an impression bar control lever pivoted on the ma chine frame 1 at 76; said lever 70 preferably embracing two free extremities. ()perative connection between said levers 7a and 7c is preferably established by a link Tb.()lic end of which is pivoted to lever Ta and the other end of which is pivoted to said lever Tc.

A spring 7d tends to move lever 7c away from its normal rest position, and in a direction to actuate said impression bar. A detent or latch 76 is provided for maintaining 1e ver 70 in its normal rest position with said spring 7d under tension. Said detent 7! is held in its retracted position by means of a spring 7;); said detent being adapted to prc vent the movement of lever Tc away from its normal rest position and thereby to main-' tain said lever and the impression bar in re tracted rest sition. Detent 7t embraces an arm 715 W ich is spring-pressed, and an arm 7% which is arranged to be actuated by a device operably connected with a keyboard; said device being arranged to release lever 70 from detent 7t to allow spring 74 to impel lever 70 in a direction to actuate llllpression bar 4.

The means for actuating detent 7t to release lever 70, comprises a carrier I) pivoted at its lower end to an arm D which is op crably connected with a keyboard. A guide 7' is provided for guiding lever I) in its movement toward and away from its normal rest position. The upper extremity of said carrier D preferably comprises a head member upon which a bifurcated bell cranlc D is pivotally attached. ()ne arm of said bell-crank is arranged to overhang arm 71 of detent 7t and is normally in operative connection therewith by means of a loose .joint. The movement of the other arm of said bell-crank D is preferably Iestrictcd in one direction by a stud D on the head member of said carrier D and it is movable in the opposite direction against the action of a s ging D8. To the end that when carrierv 5 is moved away from its normal rest position by the operation of the mechanisms of the machine as controlled from a keyboard, belLcrank D causes detent 7t to release operating lever 7r. As carrier D continues to move in a direction away from its normal rest position. bellcrank D is caused to move out of operative engagement with arm 7& of detent 71, thus allowing said detent to return to normal rest position by the action of its spring 7 p. During the returning of said carriage D" from its operative position, bell-crank l) encounters arm 7t ot' detent 7i, and is ac tuated thereby against the action of its spring Dc. thereby allowing of the further upward movement of said carrier I) and of the delivering of said bell crank into operative position with reference to detent 7t.

\Vhen said lever 7c is disengaged from its detent 7!. spring 70!. normally held under tension, impels the lever in a direction to force the impression bar 4 to more into printing position. Changeable means are provided for restricting the movennnt of said impression bar in its operative direc tion. Said means are controllable by an operator and arranged to regulate the op erative force of the impression bar for performing a variable impression. The changeable mcans comprise a stop 77 arranged to limit the movement of lever To in its upcrzitive direction; a I'Utillillllt-g preferably threaded shaft. Tl upon which said stop TT is mounted; a support 76 having a threaded recess for affording mounting ti. said rotatalllc shalt TR. and a gear wheel i'l upon said shaft. A rotatable shaft Th.prci'cralily running to the front of theinachiuc frame is provided with a crank handle T5! at its outer end. and a norm or threaded incnilicr c at its inner end meshing with said gear wheel Ht) on shaft Tt To the end that when the cranlt handle 75?: is manipulated by the operator, shalt T5 causes shaft in to rotate in its support iii to increase or diminish the distance of stop T? from arm Tm o'l' lcvcr Tr. The operative force oi the imprcssiou liar may thus be adjusted by the operator as required.

An improvcd carriage i'ccd nicchanisni of simple and cliicicnt construction is provided, which embraces nit-ans opcralily connected with the impression liar actuating means. The said Incchanism i mpriscs an cscapw nieul lcvcr or punl ll adapted to he engaged with and disengaged from carriage ]tl.(l( il by lilcun opcruldy com cctcd with u lrcyboard. and an cscapcuicnt mcciianism ar ranged to he engaged with and to he disen gaged from said carriage rack by means controlled from :i keyboard. 'l hc said escapenlcnt mechanism conipriscs a frame mcmlicr 2L pirolully liloiiii d upon a sup port Big on machine l'zamc l. and u slida le nicmlicr JUL mounted in said frame nicin her 21. and adapted to! slidalilc lllll l'lll'ltllt therein. hlcamopcrably connected with said tranic nicnilicr and controlled from a l c vboard are adapted to actuatesaid frame lucnilicr for moving said slidalilc nit-inherinto and out of engagement with said I'tllh' i l.

l'lic frame Incnilicr lSdH'tl ll'tllily of rec-- tangular construction. comprising vertical lateral standards, a longitudinal groove or slot Al? to! housing the slidzllilc member. and slots 211 and Zlw i'or ali'or-llng slidalilc mounting to member Jill. A lug -lfi on a support Qlf/ :illbi'ils pivotal attaciuucnt to said frame ni nilicr 2i. and a. linlt J4 is pi'v-- oted by one cnd to a projection 24a on frame member 2i and by its other end saidlink is pivotally attached to an arm 25 mounted with wheel 22, and moves the cscapement bar in a direction to cause wheel 22 to operate said shaft 23, and thereby to move retracting arm 23?) to move into engagement with lever for returning said lever to normal rest position subsequently to the printing operation. Subsequently to the retracting operation and the returning of the escapement bar into engagement with the carriage rack, spring 231 actuates lever 23a to cause it to return retracting arm 23.?) to normal rest position.

The carriage is provided with paper guides for guiding the paper into proper position with reference to the impression bar: said guides 27 being adapted to maintain the paper in apposition with said bar.

In the preferred type of machine embodying my invention, shown in Fig. 2. types are successively delivered to a common printing position by ivotally mounted type bars 14, arranged ra ially of a segmental support 10 and severally pivoted upon a shaft 145 in said segmental support In. Said type bar 14 comprises a type head lie, and a cam 14a, preferably slotted, for affording loose operative connection between said type bar and its actuating means. A lever 15 pivoted at one end on a support attached to the machine frame, is provided at the other end with a stud which is adapted to be taken into the slot of said slotted cam 14a, and guides for maintaining said lever in engagement with said slotted cam. A link 16 is pivotally attached by its upper end to lever 15 and by its lower end to key lever 19. Said, key lever is pivoted on the machine frame at 19a, and is actuated by means of keys 17. A guide 13 is provided for guiding the types into printing position; said guide 13 being further arranged to act as an anvil against which the types abut during the printing operations.

rocker shaft 18b runs transversely across the machine frame. and is journaled therein. Arms 18 are mounted on said rocker shaft--one near each end thereof. A universal bar 1% connects the free ends of said arms. A bell-crank lever 3 is pivoted on the machine frame. A link B is pivoted by one end to an arm of the said bellcrank and byits other end to said universal bar 18a. Another link B is pivoted by one end to the other arm of said bellcrank B and by its other end to sliding lever B, which is mounted for slidable movement in guides Pm, and embraces a. push member Bt in loose operative connection with head member C/l' of lever 7. which is spring-pressed. Said lever C mounted for slidable. movement in guides C. and embraces an inner extremity rounded to form a cam surface for actuating during its inward progress. cams 32a and 33a successively. and through said cams to rock the rocker shafts 32 and 33 respectively, and thus to release the impression bar to allow it to perform the printing operation and subsequently to actuate the carriage feed mechanism.

Fig. 2A shows a modified form of my invention, wherein a wheel 14k carries movable types and delivers said types, one at a time, into the operative position with reference to the impression bar.

A spacing bar 82 is provided at the front of the machine. its operating lever 83 is pivoted at 834 and comprises a free inner extremity 836 which is rounded to form a cam surface and is operably connected by means of a loose joint with a ram 856 on a lever 85.

Said lever 85 is preferably provided with aiiook 85a adapted to engage with lever 70 to prevent lever 70 from moving away from its normal position when it is released from its detent durin the operation of spacing bar operating lever 83, and thus preventing spring 7r] from impelling leverTcinadirection to move the impression bar for performing the printing operation. A spring 86 is provided for normally maintaining lever 85 in retracted rest position out of engagement with lever 70 when the spacing bar is in inoperative position. When the spacing bar is depressed, the rear end of operating lever 83 ascends and aetuates hooked lever 85 against the action of its spring 96, delivering hook 85a into engagement with lever 70. This looks the lever 70 in its normal rest position and prevents a spring 711 from actuating said lever 70 when detent H is disengaged therefrom.

The operation is as follows:

lVhen a key is depressed, the initial move ment causes the required character to be delivered into the operative position. The types may be delivered into printing position in a variety of waystwo preferred methods being shown in thedrawings and described herein. In one type of machine embodying my invention, a plurality of pivoted type bars 14 are adapted to move types successively to a common printing position to cooperate with the impression bar for performing the printing operation. Another type of machine embraces a type wheel carrying movable types which are successively brought to a common printing position. As the key lever 19 descends, it depresses universal bar 18a. and thus actuates hell crank B through the link B to in turn actuate lever B through link B", which in turn forces spring-pressed lever C to move inward and to actuate rocker shaft 32 by means of cam 352a,- thus causing arms D and D mounted on said shaft 32 to sinnlltancously move in directions respectivcly to force link D to move the escapemcnt lover or carriage rack pawl D into enga cment with said rack 20, and to cause ing adapted to release said lever detent prior to the operation of the lever retracting means to allow of the reengagement of said lever with the detent under the pressure of said retracting means, said detent being irresponsive to the operations of said retracting key-controlled mechanism.

7. In a typewriter, an impression lHtl normally occupying a retracted rest position, a bar control lever operably connected therewith, mechanical means for impelling said lever in a direction to cause the impression bar to perform the printing operation, means the printing operation, a detent coiiperating with said lever for maintaining the lever and the bar in retracted position, a finger key, a. carrier opprably connected with said finger key, a device on said carrier and movable thei'ewith for actuating said detent to move it out of engagement with said operating lever and thus allow of the printing op cration, means for retracting said lever sub-- sequently to the printing operation, said de tent ,actuating means being adapted to release said detent to allow it to return to nor mal posflion prior to the operation of the lever retracting means, a spring for returning he detent to normal position uhseqnently to the release of said detent Jy its actuating means, said detent being rendered irresponsive to the retracting operations of said device on the carrier.

9. In a typewriter, an impression bar, an operating lever therefor, a spring for actuating said lever to force the impression bar to perform the printing operation, a detent cooperating with said lever for maintaining the lever and the bar in retracted rest position, a finger key, a carrier operably connccted with said finger key, a spring-pressed device on said carrier and movable there with for actuating said detent and releasing said operating lever to allow said spring to impel. said lever in a direction to force the impression bar to perform the printing operation, means for retracting the lever subscr uently to the printing operation, the detent actuating means being adapted to release said detent prior to the operation of the lever retracting means to allow of the engagement of said lever said detent being rendered irresponsive to the retracting operations of the said spring-prcssed mechanical device.

10. In a typewriter, a carriage adapted for intermittent movement, a frame movably mounted thereon, an impression bar mounted on said frame and arranged to be moved thereby in a direction away from and toward the carriage, a collar, a cross bar on said frame mounted in said collar and adapted for slidable movement therein, an operating lever, means operably connecting said lever with said collar, mechanical means for moving said lever in a direction to actuate said impression bar through said collar and said frame to force the impression bar to perform the printing operation, means cooperating with said lever for maintaining the lever and the impression bar in retracted rest position, means controllable from a keyboard for releasing said lever to allow of theprinting operation, and means for retracting said lever and said impression bar subsequently to the printing operation.

11. n a typewriter, a carriage adapted for intermittent movement, a rocker shaft jonrnaled therein, rocker arms mounted on said shaft and arranged to rock sai'd shaft, an impression bar connecting said rocker arms and adapted to be moved by said arms in a direction away from and toward said carriage, a collar, a cross harljoining said rocker arms and mounted in said collar wherein it. is arranged to move slidably, a lever attached to said collar, an operating lever, a link pivoted by one end to said collar lever and by the other end to said operating lever, mechanical means for moving said operating lever in a directionto cause the said devices connecting the operating lever with the impression bar to move the said impression bar into printing position,

and means 'for the returning of the impression bar to retracted rest position subsequently to the printing operation.

12. In a typewriter, an impression bill, an operating lever, a spring for impelling said lever in a direction to force the impression bar to move into printing position, a detent cooperating with said operating lever for maintaining the lever in normal rest position with said spring under tension, a finger key, a carrier operably connected therewith, a spring-pressed mechanical device mounted on said carrier and movable therewith for releasing the lever to allow the spring to move said lever in a. direction to actuate said impression bar, means for retracting the im pression bar, said spring-pressed meenanb cal device being arran d to move out of operative engagement with and to release said detent prior to the operation of the retracting means, said detent, said lever and said operation, a carriage adapted for intermittwt movement, an escapement mechanism arranged to be moved by said carriage, a rocker shaft, means on said shaft cooperating with said cscapement mechanism for operating said shaft, a mechanical device mounted on said rocker shaft and arranged to be actuated thereby tor retracting said operating lever subsequently to the printing operation, means connected with said retracting device for guiding said device into engagement with said lever during the retracting operation. means for releasing said detent to allow it to return to normal rest position prior to the operation of said retracting device. and means for rendering said detent, said lever and said impression bar irresponsive to the operations of the retracting detent actuating means.

it). In a typewriter, an impression bar, an operating lever, mechanical means for actuating said lever to cause said impression bar to move into printing position, means for maintaining said lever in retracted po sition, means for releasing said lever to allow of the printing operation, a carriage, a keyboard, an escapement mechanism adapted to he moved by said carriage, a rocker shaft, means mounted on said shaft and cooperating with said escapement mechanism for actuating the shaft; means on said shaft adapted to be operated thereby and adapt ed to cooperate with said operating lever for retracting the lever subseipiently to the printing operation, means for gniding said retracting means into engagement with said lever during the retracting opera in means for releasing the lever maintaining 111C211? prior to the operation of the lever rcirivo ing mcans, means for rendering aid irver and said impression bar il'l'tfilitliirdVi, to the operations of the returning lever releasing means, and means for returning said shaft and said lever retracting means oi-muted thereon to normal rest position sli sc quently to the returning oi the esoapcment mechanism to normal rest position- 2U. In a typewriter, an impression inti, an operating lever, mechanical means for id ating said lever to cause said ii'nprif 1 to move into printing position, new maintaining said lcvcr in retracted re tion, means for releasing said lever to i i of the printing operation, a curring a loa r board, an escapemcnt mechanism adapted to be moved by said carriage, a roclic means associated with said shaft, iliit crating with said cscapement mechaniun actuating said shaft, a mechanical dvricr said rocker shaft adapted to be operatrf it said shaft and to cooperate with said ing lever for retracting the lever quently to the printing operation, iii-1: guiding said retracting means into i i ment with said lever during the retracting operation, means for releasing the lever maintaining means prior to the operation of the lever retracting means, means for rendering said lever and said impression bar irresponsive to the operations of the returning lever releasing means, and a spring-pressed device for returning said lever retracting means to normal rest position andfor maintaining it in that condition subsequently to the returning of the escapement mechanism to normal rest position.

:21. In a typewriter, printing instrumentalities, a carriage adapted for intermittent movements, a carriage rack, an escapement bar normally held in engagement with said rack, means for operating said printing instrumentalties, means cooperating with said escapement bar for maintaining said bar in normal rest position, manually operable means for releasing said escapement bar to allow the bar to move a distance in a direc tion opposite to the intermittent nmvcments of the carriage, a spring for impelling said bar in said direction, means for arresting the movement of said bar in said direction, an cscapemcnt lever engageable with and normally disengaged from sa carriage rack, means for moving said escnpenient lever into engagement with said rack prior to the disengagement of said eslapemcnt bar from said rack, and means for moving said carriage to cause said carriage rack to force "lid cscapement bar to return to retracted position against the a tion of said 'ing. said escapcmcnt bar maintaining means being adapted to lock said bar in said coi 'iition.

ea in a typewriter, a l\'t, \'i)0t1lti, printing inwhanism, means for actuating said printing mechanism to cause said mechanism to perform the printing operation, a carriage means for moving said carriage, an escapement bar adapted to be moved by said care an escapement lever or pawl engagewith and normally disengaged from the marriage rack, said escapement barbeingnorma Ely held in engagement with said carriage inch. a mechanical device for moving said r," ":|!1t!!lltni1 bar out of and into engagement a 2th said carriage rack, key-controlled means for movim said pawl into engagement with said carriage rack, and forsubsequc ntly disengaging said escapement bar from said rack, a spring for moving said bar a distance in a direction opposite to the intermittent movements of the carriage, a stop for arresting its movement in that direction, said bar being arranged to return to retracted rest position and into engagement with said carriage rack subsequently to the printing operation, the said escapement lever or pawl being adapted to move out of engagement with saidrack subsequently to-the re'eingagement of said escapemeiitbar with said rack, the said means for'movingthe carriagebe- 60.d.isengaging said pawl from tion an ing adapted to move said carriage in a direction to force the escapement bar to return to normal rest position against the action of said spring, and means for lockin the esca ement bar in its retracted rest posi- 5 placing said spring again under tension.

23. In a typewriter, printing instrumentalities, a carriage, an escapement bar normally held in engagement with said carriage, means for actuating said printing instrumentalities, a spring for impelling the soapement bar in a direction opposite to the intermittent movements of the carriage, a detent cooperating with said escapemcnt bar for maintaining the bar in normal rest position with said sprin under tension, means for disengaging sai escapement bar from said carriage and for simultaneously moving it out of engagement with said detent to allow the spring to move the escapement bar a step, a stop for restricting the movement of said escapement bar in said direction, an escapement lever or awl normally disenged from the carriage rack, means for oving said pawl into engagement with said rack prior to the disengagement of said scapement bar from said rack, retracting means for moving said pawl out of engagement with said rack subsequently to the printing operation, and for returning said escapement bar into engagement with said rack prior to the disengagement of said pawl from said rack. means for moving the carriage to force the escapement bar to return to normal rest position, into engagement with its detent, and for again placing said spring under tension, and a stop for re stricting the movement of the escapement bar in its retractin direction.

24. In a typewriter, a carriage, printing instrumentallties, a carriage rack, an escapeinent bar normally in engagement with said carriage rack, an escapement lever or pawl engageable with and normally disengaged from said carriage rack, a finger key, a key lever actuated thereby, a universal bar arranged to be actuated by said key lever, means operablyconnected with said universal bar for moving said pawl into engagement with said carriage rack and for subsequently disengaging said eseapement bar from said rack, a spring for moving said bar in a direction opposite to the intermittent movements of the carriage, a stop for restricting the movement of the escapement bar in said direction, retracting means for returning said eseapement bar into engagement with said rack and for subsequently the rack, a Spring for moving the carriage a step in a irection to force the escapement bar to re turn to retracted rest position, and for placing said bar actuating spring again under tension.

25. In a typewriter, a carriage, a carriage rack, printing instrumentalities, means for causing said, printing instrumentaiities to perform the printing operation, an escapement leverprpawl engageable with and normally disengaged from said rack, a mechanical device movabiy mounted on a support on the machine frame, an escapeinent bar mounted in said mechanical device and adapted for slidable movement therein, said escapementbar being normaily heid in engagement with said carriage rack, a keyactuated universal bar, means operably connected with said universal bar for moving said escapement lever or pawl into engagement with said carriage rack, and for subsequently actuating said mechanical device to cause said "device to move the escapement bar out of engagement with said rack, a detent for maintaining said escapement bar in retracted rest position, the said means for disengaging the escapemcnt bar from the rack being arranged to simultaneously disengage said escapement bar from the detent, a spring for impelling the escapement bar in a direction opposite to the intermittent movements of the carriage, a stop for restricting the movement of said escapement bar in said direction, retracting means for disengaging said escapement lever or pawl from said rack to allow of the intermittent movement of the carriage, and for reiingaging the escapement bar with said rack prior to the disengagement of the pawl from said rack, and power means for moving the carriage in a direction to force the escapement bar to return to normal rest position into reiingagement with its detent, and for again placing the eseapement bar actuating spring under tension.

26. In a typewriter, an impression bar, an operating lover, a spring for impelling said lever in a direction to force the impression bar to perform the printing operation, a detent for maintaining the lever lll retracted rest position, means operabiy connected with a keyboard for releasing said iever to allow of the printing operation, a carriage adapted for intermittent movement, an escapement bar arranged to be moved by said carriage, a mechanical device in operative connection with said escapcment bar and cooperating with said operating lever for the returning of said lever to retracted rest position subsequently lo the printing operation, an escapemcnt ratchet on said escapomeut bar normally held in engagement with said carriage rack, another ratchet on said escapeinent bar being engageable with and nor mally disengaged from said retracting mechanical device, a finger key, means operably connected with said finger key for disengaging said escapenient ratchet from the Calriage rack and for instantly delivering said other ratchet into engagement with said lever retracting mechanical device, a detent cooperating with said escapement bar for maintaining the bar in retracted rest position with a spring under tension, said means for disengaging the escapement, bar from the rack being arranged to simultaneously move said bar out of engagement with its detent, a spring for impelling said escapem'ent bar in a direction to operate said lever retracting mechanical device and force the said device to return said operating lever to 7 normal rest position, means for restricting the movement of said bar in its operative direction, a pawl, key-actuated means for moving said pawlinto engagement with the carriage rack prior to the disengagement of said escapement bar from said rack, the reverse movement of the mechanisms of the machine as controlled from a keyboard being adapted to return said escapement bar into engagement with said rack and to subsequently disei'igage the pawl from the rack to allow of the intermittent movement of the carriage, and means for moving the carriage in a direction to cause the escapemcnt bar to return to normal rest position and into engagement with its iletent against the action of its spring and placing said spring again under tension.

27. In a typewriter, an impression bar normally occupying a retracted rest position a lever operably connected therewith, means for impelling the lever in a direction to cause the impression bar to move into printing position, a detent cooperating with said lever for maintaining the lever and said impression bar in normal rest position, manually operable mechanism for releasing the lever to allow of the printing operation, a keyboard, a carriage, means for moving said carriage, an escapcmcnt mechanism adapted to he moved by said carriage, said escapement mechanism including a frame member movably mounted on a support on the machine frame, and an escapcmcnt bar mounted in said frame member and adapted for slidable movement therein, a mechanical device in operative connection with said escapcment mechanism and cooperating with said impression bar operating lever for returning said operating lever and said impression bar to retracted rest position, means on said escapelnent bar normally in engagement with the carriage rack, other means on said ercapement bar engageable but normally out of engagement with said retracting mechani cal device, a pawl, li'ey-actuated means for moving said pawl into engagement with said carriage rack, and for subsequently actuating said frame member to cause said member to move said escapcment bar out of engagement with said carriage rack, means for au tomatically moving said escapement bar in a direction to actuate said retracting mechanical device, means allowing said lever detent to return to normal position prior to the operation of lsaid lever retracting means to allow of the reengagement of said lever with its detcnt, and means for rendering said lever detent, said lever and said impression bar irr -sponsive to the operations of the returning key-controlled means for actuating said detent.

28. In a typewriter, an impression bar, means for actuating said impression bar, a keyboard. a carriage, means for moving said carriage. an escapemcnt mechanism adapted to be moved by said carriage and including a movably mounted frame member and an cscapemcnt bar mounted in said frame member and adapted for movement therein. an escapement ratchet on said escapemcnt bar normally held in engagement with the carriage 'ack, means for returning the impres sion bar actuating means and the bar to retracted rest position, a ratchet on said cscapement bar engagcable with but normally disengaged from said impression bar retracting means, a pawl, means for moving said pawl into engagement with the carriage rack. and means for subsequently actuating said frame member to cause said escapcment bar to more out of engagement with the rack and into instant engagement with the im pression bar retracting means. a spring for impclling said cscapement bar in a direction to actuate said retracting means, and upon the return of said escapement bar into ongagement with said carriage rack and the releasing of said rack from its pawl during the reverse movement of the actuating means as controlled from a keyboard, the said means for moving the carriage acting to return said escapemcnt bar to normal rest position against the action of its sprin 29. In a typewriter, an impression bar, spring means for actuating said impression bar, a keyboard, a. carriage, a carriage rack. an escapcment lever or pawl in operative connection with a keyboard and adapted to be moved into and out of engagement with said carriage rack, a mechanical device movably mounted on the machine frame, an escapcmcnt bar mounted in said mechanical device and adapted for movement therein, an escapement ratchet on said escapemcnt bar normally held in engagement with said carriage rack, a driven shaft, driving means mounted on said shaft. a ratchet on said cscapemcnt bar cngageahle with and normally disengaged from said shaft driving means, keycontrolled means for actuating said mechanical device to cause said device to move the escapement bar out of engagement with the rack and into instant engagement with said shaft driving means, a spring for impelling said slidaible escapement bar in a direction a step to cause the shaft driving means to drive said shaft, a retracting device on said shaft being driven thereby and arranged to return the impression bar to normal rest position subsequently to the printing operation, key-actuated means for moving said pawl into engagement with said rack prior to the disengagement of the escapement bar from said rack, said escape nient bar being adapted to rengage with said rack and said pawl to subsequently release said rack during the reverse movement of the mechanisms of the machine as controlled from a keyboard, and means for moving the carriage to ca use said escapement bar to return to normal rest position against the action of its spring and for placing said spring again under tension.

30. In a t v 'pewriter, an impression bar normally in retracted rest position, means for actuating said impression bar, means for limiting its movement in the direction for performing the printing operation, said means being changeable and adapted to adjust the operative force of said impression bar to deliver a variable impression during the printing operations, manually operable mechanisms for controlling the operations of the impression bar, and means for the re turning oi" said bar to its retracted rest position subsequently to the printing operations. i

31. in E. typewritten an impression bar, means for moving said inn'n'ession bar to a printing point. a stop for limiting its movement in thealircction of said printing point, said stop lacing adapted to regulate the operative force of the impression bar to deliver :1 variable impression during the printing operations, means controlled by an operator for adjusting said stop in 'arying positions to limit the movement of said impression bar, and means for the returning of said bar to normal rest position subsequcntly to the printing operations.

32. In a typewriter, an impression bar, mechanical means for actuating said impression bar, a shaft, a stop associated there with, means controllable by an operator for adjusting the position of the stop, said changeable stop being arranged to adjust the operative force of the impression bar for delivering a variable impression at the will of the operator; manually operable mechanism for mmtrolling the operation of the impression liar, and means for the returning of said bar to normal rest position subsequently to the printing operations.

33. In a typewriter, an impression bar normally occupying a retracted rest position. a lever in operative connection there with. mechanical means for impelling said lever in a direction to force the impression bar to move to a printing position, a changeable stop cooperating with said lever for restricting the movements of said lever and the impression bar in their operative directions, a device in operative connection with said stop and adapted to change the posiperform the printing operation, changeable means forvlimiting the movement of said mechanism in its operative direction, said changeable means beingadapted to regulate the operative force of said printing medhanism to deliver a variable impression during the printing operations, means controllable in an operator for adjusting said change able means in varying positions with refer ence to said printing mechanism actuating means to limit the movement of said printing mechanism in the direction of the print-' ing point, and means for the returning of the printing mechanism to retracted rest position subscipiently to the printing operntion.

35. In a typewriter, printing mechanism, mains 't'or actuating said printing n1cchanism, a driven shaft, a changeable stop associated with said driven shaft and arranged to restrict the movement of said printii'ig mechanism tonard the printing point, means controllable by an operator for causing said driven shaft to move said changeable stop into varving positions with reference to said printing mechanism actuating means said changeable means being adapted to rcgnlntc the operative force of said printing mechanism for delivering a. variable impression as reqnirml by the operator, and means for the I'itlll'lllilg' of the printing mechanism to normal r st position 5lIi)H((ll('Ilil to the printing operations.

151i. 111 a typewriter. an impression bar, Spring means for actuating said bar. a detcnt cooperating with the lfill' actuating means for normally maintaining said impression bar in retracted rest position with said spring under tension, :1 linger key, means in operative connection with said linger key causing said dctcnt to rcleas said impression bar actuating means and the bar to allow said spring in more the bar into printing position, means for returning the impression bar from its operative to retracted rest position. and means associated with the detent actuating means and movable therewith adapted, to release said bar actuating means, and for rendering said detent, said bar actuating means and the bar irresponsive to the operations of the rte-Setting means subsequently to the return of the impression bar tunormal rest position.

3?. In a typewriter, an impression bar, a control lever operably connected therewith, a spring for impelling said lever in a direction to force the bar to perform the printing operation, a detent' cooperating with said control lever for normally maintaining said lever and the impression bar in retracted rest position with said spring under tension, a finger key, means connecting said finger key with said detent for causing the detent to release said operating lever and to allow said spring to actuate said lever and the bar, mechanical means for returning said lever and the bar to normal rest position, and means associated with said detent actuating means, and movable therewith, for first moving said detent out of engagement with said control lever and for subsequently releasing said detent to allow of the recngagement of said lever with said detent under the impulse of said lever retracting means, said means associated with the detent actuating means being adapted to render said detent, and thus said lever and the bar, irresponsive to the operations of said associated means while said detent actuating mechanism is being returned to normal rest position and into operative connection with said detent.

38. In a typewriter, an impression bar, a control lever operably connected therewith, a spring for actuating said lever to force the impression bar to move into printing position, a detent cooperating with said control lever for normally maintaining the impression bar in normal rest position with said spring under tension, a finger key, means operably connecting, said finger key with said detent causing said. detent to release said lever to allow said spring to move the impression bar into printing position, a mechanical device associated with said dctent au-tuating means. and movable therewith, for

first moving said detent out of engagement with the control lever, and for subsequently releasing said detent, mechanical means for returning said lever and the impression bar to retracted rest position and forcing said lever to rei ngage with said dctcnt suhse qucntly to the release of the dclcnt by said mechanical device, which is adapted to he itself actuated as it encounters the defeat during the reverse movement of said ill-tent actuating means to normal rest position into operative connection with said dctenl. said mechanical device rendering said deter-t irresponsive to the operations ol the returning dctent actuating means.

39. In a typewriter, a carriage adapted for intermittent movement, an impression bar movably mounted on said carriage and arranged to move in directions away from and toward the carriage, types adapted for movement to a common printing position,

means for successively moving said types lo said common printing position, mechanical means for impelling said impression bar in the direction of said printing position to cooperate with said types for performing the printing operation, means for resetting the types and said impression bar to normal rest position subsequently to the printing operations, and means for renderin said bar irrcsponsive to the operations 0 its returning actuating means.

it]. In a typewriter, a power operated impression bar, means for normally maintainmg said impression barin a restricted posi tion, means for releasing said impression bar to allow of the printing operation, and means for subsequently retracting said bar.

41. In a ty uiwriter, a carriage adapted for intermittent movement, a frame movably mounted on said carriage, an impression bar mounted on said frame and arranged to be moved by said frame away from and toward the carriage, types movable to a common printing position, means for successively moving said types into printing position, spring means causing said frame to reciprocate said impression bar into printing position to cooperate with said types as they are delivered into printing position one at atime, for performing the printing operation, means for normally maintaining said impression bar in retracted rest position with said spring under tension, manually operable means for releasing said bar to allow said bar to cor'iperate with said types for performin the printing operation, mechanical means for re-setting the impression bar and the types subsequently to the printing operation, and means for controlling the cycles of movements of said types, said impression liar and said carriage in a predetermined rel ation.

l2 lo a typewriter, a carriage adapted for intermittent movement, an impression bar mo vably mounted thereon, a control lever, a spring for impelling said lever in a direction to force the impression bar to perform the printing operation, mechanical means for normally maintaining Said control lover in retracted rest position with said spring under tension, manually operable means for releasing said lever to allow ol the printing operation, carriage escapeincnt mechanism, a device operably conncctcd with said mechanism and cooperating with said control lever for returning the impression lllli to normal rest position subsequently to the printing operation, means for rendering the impression bar irresponsive to the operations of the rc-setting mcansu and means for controlling the cycle.

of movements of the bar actuating means and the cycle of said carriage actuating means in a predetermined relation.

43. In a typewriter, a traveling element or carriage, a carriage rack, escapement mechanism adapted to normally restrict the movement of said carriage in either direction, a line space wheel, means for disengaging the carriage rack from said escapement mechanism to allow of the manual movement of said carriage on the machine frame independently of the operation of said line space wheel, and means in operative connection with saidline space wheel for movin said carriage rack out of engagement wit said escapement mechanism and for simultaneously operating said line, s ace wheel, to allow 0 the movement of t e carriage toward the initial printing simultaneously feed a r printing a new line.

44. In a typewriter, a carriage adapted for intermittent movement, an esca ement, a line space wheel, a feed roll, a mec anical device movably mounted on said carriage and in o erative connection with said carriage rac for moving said rack out of engagement with said escapement bar to allow of the movement of the carria e independently of the o eration of sai line space wheel, and anot er mechanical device in op erative connection with said carriage rack and with said line space wheel for simulposition and to esh surface for taneously disengaging said rack from said escapement mechanism and for actuating said line space wheel to allow of the movement of the carriage toward the initial printin position and to feed said feed roll a variab e distance.

45. In a typewriter, a keyboard provided with a spacing bar, a carriage, means for moving said carriage, an escapement bar adapted to be moved b said carriage, an impression bar, means or actuating said impression bar and including an operating lever, a detent cooperating with said lever for maintaining the lever and said bar in normal rest position, manually operable mechanism for releasing said lever to allow of the printing operation, an escapement lever or pawl engageable with and normally disengaged from the carriage rack, said escapement her being normally held in engagement with said carriage rack, means for moving said pawl into engagement with said rack and for subsequent y disengaging said escapement bar from said rack, a mechanical device for retracting the operating lever subsequently to the rinting operation, said device being operub y connected with said escapement bar when said bar is disenga ed from said carriage rack, means for ime ling said bar in a direction to actuate said ever retracting device, and means operated by said spacing bar adapted to be projected into the nth of said operating lever for arresting tlie movement of said lever and the impression bar in a direction away from their normal rest positions and thereby preventing said impression bar from performing the printing operation during the operationof said spacing bar.

46. In a typewriter, an impression bar, types arranged to move into operative position with reference to said impression bar, means for severally delivering said types into operative position, a detent for maintaining said ban in retracted position, a finger key, means operably connected with said finger key for moving said impression bar into printing position to cooperate with each and any type delivered into operative position for performing the printing operation, retracting means for returning said types to normal rest position, and a device for returning said impression bar to normal rest position subsequently to the printing position with said impression bar during its operative and retracting movements.

47. In a t pewriter, an impression bar, types movabli; to a common printing positlon, means for moving said types, one at a time, into said position, a control lever, means cooperating with said lever for maintaining said lever and the impression bar is retracted rest position, a key-actuated universal bar, means operably connected with said universal bar for releasing said lever to allow of the printing operation, said impression bar cooperating with said types as they are successively delivered into printing position for performing the printing operation, said types being adapted to return to normal rest position subsequently to the printing operation, and means for returning said impression bar to retracted position subsequently to the printing operation and prior to the returning of said types to normal rest position, means being provided for maintaining the paper in apposition with said impression bar during its movement toward and away from the printing position and while occupying a normal rest position.

48. In a typewriter, an impression bar, a plurality of type carriers adapted for movement to a common printing position, means for reciprocating said type bars successively into said printing position, means for actuating said impression bar to cause said bar to move toward said printing position to cooperate with said type carriers for performing the printing operatiommeans for maintaming said impression bar in retracted position, means for releasing said bar to allow of the printin operation, and a device for retracting saitl impression bar subsequently to the printing operation and prior to the retracting of said type carriers to normal rest position.

49. In a typewriter, an impression bar a plurality of type carriers arranged radially of a segmental support, and adapted for movement to a common printing position, a'

cam associated with each type carrier, a plurality of levers movably mounted on a support on the machine frame, said ]evers being in loose operative connection with said cams, one lever with each cam, means being provided in connection with said levers for maintaining said levers in engagement with said cams and for guiding the movement of said levers on said cams during the opera tion of said type carriers, keys, key levers actuated by said keys, links connecting said key levers with said cam actuating levers, means for moving said impression bar into printing position to cooperate with each type carrier as it is delivered into operative position for performing the printing opera tion, said type rarrier being adapted to return to retracted rest position subserpiently to the printing operation, and means for returning said impression bar to normal rest position subsequently to the printing opera tion and prior to the returning of said type carrier to retracted rest position.

50. In a typewriter, an impression bar normally occupying a retracted rest position, means for moving said impression bar into printing position, manually operable mechanism for controlling the operation of said impression bar, and means for the returning of said bar to normal rest position after the printing operations.

51. In a typewriter, an impression bar normally occupying a retracted rest position, spring means for moving said impression bar into the printing position, manually operable mechanism for controlling the operation of said impression bar, and means for the returning of said impression bar to its normal rest position after the printing operation.

In testimony that I claim the foregoing as my invention, I have signed my name to this specification in the presence of two wit nesses.

ALEXANDER BLOCK. Witnesses SAMUEL ATTLEY, Haney Kmasonnn. 

